Idempotent order processing prevents financial losses for digital goods sellers.

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Duplicate orders for digital products like game keys result in irreversible inventory loss and direct financial damage. Common causes include client retries, network issues, duplicate webhooks, and crashed background jobs. The standard technical solution involves the client generating a unique idempotency key for each transaction. The server uses this key to detect and prevent duplicate processing, ensuring each order is fulfilled exactly once. This system is critical for the reliability and financial viability of digital storefronts.

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